Among the following, the configuration $1{\mathrm{s}}^2 2{\mathrm{s}}^2 2{\mathrm{p}}^6 3{\mathrm{s}}^2 3{\mathrm{p}}^{5}4{\mathrm{s}}^1$ is valid for the :

For argon, the excited-state electron configuration is,

$1s^{2}2s^{2}2p^{6}3s^{2}3p^{5}4s^1$

Thus, the option C is correct for the given configuration.